baber/WOPTO huggingface dataset:
Patent GB-1086595-A (GB)
Title: Fluorination of aromatic compounds
Inventor: FIELDING HAROLD CROSBIE
IPC: C07C17/20
Filed: 1965-07-15
Abstract: Hexafluorobenzene and completely halogenated fluorochlorobenzenes containing four or five fluorine atoms in the molecule are obtained by heating one or more fluorochlorobenzenes containing 3 to 5 F atoms in the molecule with a dry alkali metal fluoride in a dry, polar, aprotic solvent at a pressure above atmospheric pressure but not above 10 atm. removing the products as they are formed by continuously distilling and condensing them whilst tetrafluorochlorobenzenes remain in the reaction mixture, and introducing fresh fluorochlorobenzene as reactant continuously or intermittently in an amount sufficient to prevent the reaction temperature rising above 230 DEG  C.  An example is given.
Patent GB-1137215-A (GB)
Title: Improvements in and relating to heat stabilizer compositions
IPC: C08K5/06
Filed: 1967-06-29
Abstract: 1,137,215. Stabilizing polymers. M. & T. CHEMICALS Inc. 29 June, 1967 [29 June, 1966], No. 30138/67. Heading C3P. Metal soap compositions for heat stabilizing P.V.C. and similar polymers are themselves storage-stabilized by the addition of 1-50% by wt. of a mixture of 1-50 parts by weight of a C 6+ -alkyl monoether of an alkylene glycol with 1-50 parts of an organic, carboxylic acid. The preferred heat stabilizing composition comprises (a) a cadmium carboxylate, (b) a barium or strontium carboxylate, one of (a) and (b) being derived from an aliphatic and the other an aromatic carboxylic acid and (c) a zinc carboxylate. Preferred are (a) cadmium di- (p-tert.-butyl benzoate), (b) barium complex of high molecular weight aliphatic carboxylic acid-ester and (c) zinc di-(p-tert. -butyl benzoate); to these are added 2-hexoxyethanol and 2- ethylhexanoic acid and preferably also a triorgano phosphite such as triphenyl phosphite and the whole dissolved in an alcohol or phenol, e.g. iso-octanol. Many alternatives are listed.
Patent GB-1427179-A (GB)
Title: Flexible coupling
IPC: F16D3/68
Filed: 1973-06-26
Abstract: 1427179 Flexible shaft couplings CARL FREUDENBERG 26 June 1973 [13 July 1972] 30241/73 Heading F2U A flexible shaft coupling comprises a ring alternately of rigid members 2A, 2B and flexible members 1, the rigid members 2A, 2B each tapering axially, the narrow ends of alternate rigid members 2A being at one end, and of the other rigid members 2B at the other end. Alternate or all the rigid members may each have a hole 8 for a bolt to connect it to a shaft mounted flange. Alternate members 2B may be connected in a star 4 having a splined central bore, or, both sets of alternate members may be connected in stars (5, 6), Fig. 6 (not shown), connected by a ball-and-socket joint including a resilient ring (10). Cooling fins (3), Fig. 4 (not shown), may be mounted on the rigid members. When bolts in holes 8 are used to secure the coupling to a flange, the flange and rigid member may have interengaging dogs and recesses to prevent relative rotation as the bolts are tightened.
Patent GB-299424-A (GB)
Title: Improvements in and relating to the manufacture of synthetic resins
IPC: C08G63/50
Filed: 1928-10-19
Abstract: 299,424. British Thomson-Houston Co., Ltd., (Assignees of Kienle, R. H.). Oct. 26, 1927, [Convention date]. Ester condensation products.-Synthetic resins are produced by condensing a polybasic acid such as phthalic acid first with a monohydric alcohol and then with a polyhydric alcohol; thus a polybasic acid may be reacted with amyl, butyl, allyl or diacetone alcohol or phenol or borneol and then with glycerine, and the polybasic acid may be replaced in part by a monobasic acid such as oleic acid. In the examples, phthalic anhydride is heated with butyl or amyl alcohol at 160‹ C., glycerine is then added and the mixture is heated to 200-220‹ C. until resinification occurs. The products are fusible and soluble in organic solvents such as acetone, alcohol, benzene and the mono-ethyl ether of glycol, but they may be rendered infusible and insoluble by heating to 150-200‹ C. for several hours. Mixed polyhydric alcohols, such as glycerine and glycol and mixed monohydric alcohols such as but and ethyl alcohols may be used, and instead of phthalic anhydride, polybasic acids such as succinic, maleic, fumaric, citric, sebacic, tartaric and oxalic acid or mixtures thereof may be employed. Specifications 275,219 and 275,604 are referred to. The Specification as open to inspection under Sect. 91 (3) (a) is not limited to reacting the polybasic acid with the monohydric alcohol first. This subject-matter does not appear in the Specification as accepted.
Patent GB-617668-A (GB)
Title: Improvements in direct current electric supply systems having means for absorbing regenerated power
IPC: H02H3/18
Filed: 1946-10-14
Abstract: 617,668. Protective cut - out systems. GENERAL ELECTRIC CO., Ltd., and SCHIFF, W. Oct. 14, 1946, No. 30558. [Class 38 (v)] A protective arrangement to absorb regenerated power when a traction load 3 is connected to a mercury arc rectifier 1, has a polarized relay with coil 6 and contacts PR1, PR2. When the current taken by the traction load falls to a low value, contacts PR1 close to trigger a grid-controlled vapour discharge device 8 to connect a transition resistance 4. When the traction load commences to regenerate, the-contacts PR2 close to trigger a further vapour discharge device 19, which then applies a potential to the starting electrode 15 of a mercury arc rectifier 14. The rectifier commences to discharge and connects a resistance 5 to the bus-bars to absorb the regenerated power. As the contacts PR2 close, a reversecurrent relay 7 opens contacts RCR1 in an auxiliary circuit containing the operating coil 25 of a contactor 24. Normally-open contacts 29 in this auxiliary circuit are closed by a coil 30 when the rectifier 14 discharges. When the load ceases to regenerate, the contacts RCR1 close, coil 25 is energized, and the contactor 24 closes to short out the rectifier to interrupt its discharge. After a time delay a further set of contacts 28 in the auxiliary circuit open to de-energize coil 25 so that the contactor 24 opens and disconnects the resistance 5. In the meantime contacts PR2 will have opened, and contacts PR1 open when the forward current is sufficient. Suitable means may be provided to interrupt the discharges in the vapour discharge devices.
Patent GB-1384526-A (GB)
Title: Shortenable umbrella frame
IPC: A45B19/10
Filed: 1972-12-29
Abstract: 1384526 Shortenable umbrella frames BREMSHEY A G 29 Dec 1972 [21 Sept 1972] 30665/74 Divided out of 1383668 Heading A4P A shortenable umbrella frame has a telescopic stick 1 with telescopic ribs 7 pivoted to a crown 6, main struts 25 pivoted to ribs 7 and to a main slider 24, auxiliary struts 29 pivoted to struts 25 and to an auxiliary slider 27 above slider 24, and spreader elements 46 each extending between the crown 6 and slider 27 and being formed in two sections 46', 46" connected end to end at a knee joint 12" so that when slider 27 approaches the crown 6 the elements deflect so that the joints 12" move radially away from the stick and when the slider 27 is at its closest point to crown 6 the spreader elements 46 can fold downwards alongside the stick with the joints 12" remote from the crown 6, whereby in use when the frame is covered to form an umbrella and the umbrella is folded and being shortened the elements 46 spread a mushroom of the cover adjacent to the crown. The elements 46 are preferably of resilient plastics and are oriented around the stick to lie, in plan view, between adjacent pairs of ribs 7. The joints 12" are formed by so called "film-hinges". The element sections 46', 46" may be of substantially U-shaped cross-section, except adjacent the knee 12", so that they rest within one another when the elements are folded alongside the stick. Alternatively, the elements 46 may be integrally formed with each other in the form of a tube which is slit longitudinally except adjacent its ends which thereby form rings one of which abuts the crown 6 and the other abuts the slider 27. Automatic folding down of the elements 46 occurs if the sections 46" are slightly shorter than the sections 46'. The upper stick part 2 is circular in section except at its lower end which has a crosssection corresponding to the polygonal section of the lower stick part 3.
Patent GB-701897-A (GB)
Title: Improvements in and relating to display cards
Inventor: EHRLICH JOHANN WILHELM
IPC: G09F11/02
Filed: 1952-12-03
Abstract: 701,897. Signs. TOWER PRESS (LONDON), Ltd. Dec. 3, 1952, No. 30712/52. Classes 3(1) and 3(2) A display device comprises three or more cards each having a representation to be displayed and in which each card is scored to produce two leaves, the leaves of every card being secured respectively to one leaf of two different cards. As shown, four display cards 1-4 each representing a jig-saw puzzle are each divided by a central vertical score line 6 into two leaves and the leaves of each card are glued or stapled to the leaves of the other cards so that the score lines are contiguous. This arrangement produces a central opening 10 in which a spindle can be positioned so that the device may be rotatably mounted on a base. A show ticket 14 may be secured across a pair of co-planar leaves.
Patent GB-505370-A (GB)
Title: Improvements in or relating to electrical communication systems
IPC: H04K1/04
Filed: 1937-11-09
Abstract: 505,370. Wireless signalling. STANDARD TELEPHONES & CABLES, Ltd., and MEERS, R. A. Nov. 9, 1937, No. 30736. [Class 40 (v)] In a secret wired-wireless or wireless system, a fixed carrier frequency is modulated by speech currents and by a second carrier frequency which varies periodically in accordance with a prearranged code. In the Figure, in which the terminal stations have separate transmitting and receiving paths; the signal currents pass through a low frequency F1 to a fixed frequency modulator M1, and the upper side-band is selected by a filter F2 and is fed to a variable frequency modulator M2, after which the lower side-band is selected by a filter F3. The received currents pass through corresponding apparatus in the reverse order, the demodulator D2 being supplied with the variable frequency in synchronism with M2, and the demodulator D1 being supplied with the same fixed frequency as M1. The modulators and demodulators are fed from tuning fork or other oscillators 01, 02, and the frequency of 02 is varied in steps by a series of condensers C1 which are brought into circuit in turn by a rotary switch B. The switches at the two stations are driven by synchronous motors N, and a mechanical differential may be included at one station to adjust the phase. Alternatively, the frequency may be varied gradually or in steps by the use of condensers with shaped vanes or by the use of a controlling sound film. If reversible modulator-demodulators are employed, a single path at each station serves for transmission and reception. A two-way may be inserted between the two modulation (or demodulation) stages. Specification 320,091, [Class 40 (v)], is referred to.
Patent GB-1127385-A (GB)
Title: Magnetic latching switch
IPC: H01H67/26
Filed: 1966-07-08
Abstract: 1,127,385. Automatic exchange systems. INTERNATIONAL STANDARD ELECTRIC CORP. 8 July, 1966 [13 July, 1965], No. 30758/66. Heading H4K. [Also in Division H1] In a multistage cross-bar switching network, the hold magnets are held by remanence. The magnet cores may be made of a combination of hard and soft magnetic materials or some of the turns of the magnet coils may be coupled to each other via diodes such that, overall, the magnet's characteristic is asymmetric whereby in the " on " position its core is saturated whereas in the " off " position the core is unsaturated. In the simple three stage network shown, the hold magnets selected by the marker are pulsed over leads 116 &c. with a positive voltage which is sufficient to saturate the magnet cores. A metallic sleeve wire path is thus completed between the subscribers line circuit, cut-off relay CO and the trunk circuit sleeve relay SL, the marker maintaining earth potential on leads 116 at this time. Supervisory relay S comes up to hold CO and SL to ground potential and to release the marker. At the end of the call, S falls back whereby negative potential via CO and SL pulses hold magnets 115 and 118 to bring about their release. Magnet 117 may or may not release but since ground potential has been removed from the sleeve wire it will be automatically released and test free on the next occasion that the marker applies negative test potential to its lead 140.
Patent GB-1066566-A (GB)
Title: Improvements in or relating to freight vehicles
IPC: B60P7/16
Filed: 1965-07-20
Abstract: 1,066,566. Protecting guards. W. BAHLSEN. July 20, 1965 [July 23, 1964], No. 30802/65. Heading B7B. Inflatable cushions 4, 5, 6 are secured to the side walls of a vehicle and are inflated from a compressed air source to locate the load and protect it from damage.
Patent GB-631463-A (GB)
Title: Improvements in or relating to methods of manufacturing electric wire resistances comprising a protective layer
IPC: H01C1/036
Filed: 1946-10-16
Abstract: <PICT:0631463/III/1> <PICT:0631463/III/2> <PICT:0631463/III/3> A method of manufacturing electrical resistances, comprising a former having mounted upon it a layer of resistance wire on which a protective layer is formed by mounting upon the wire a material which is in a liquid state or is transferred into this state and is then hardened, includes the step of applying beneath at least part of the layer an intermediate layer which is formed of material which passes into a hardened state without deliquidizing, and neither mixes with the material of the protective layer nor passes simultaneously with the latter into a liquid state.  When the protective layer is formed by enamel, the intermediate layer may be formed of a material which, at a temperature below the melting point of the enamel is baked or sintered to form a firm aggregate, but which at this temperature does not melt.  Such a material may be a dispersion of a loading material of high melting point, e.g. alundum, and a binder of lower melting point, e.g. glass powder, in a liquid.  When the protective layer is a lacquer the intermediate layer may comprise a loading material and a binder which does not dissolve in the solvent of the lacquer at least to such an extent that the intermediate layer is liquified or mixes with the lacquer.  In both enamelling and lacquering the intermediate layer may have a thickness equal to the wire thickness. In order to form a window in the protective layer the intermediate layer, which may be of clay and which is less mechanically strong than the protective layer, is formed only over the area of the window to be made, then the protective layer applied and the intermediate layer and protective layer over it removed.  Alternatively, the intermediate layer is formed at least in part from liquid material which by chemical transformation passes into a solid state, e.g. soluble glass. Referring to the drawings, Fig. 1 shows a ceramic tube 1 wound with wire 2, the ends of the support being closed by bands 3. The spaces between the wire turns are coated with intermediate layer 4 and then protective layer 5.  Figs. 2 and 3 illustrate the formation of windows.  Here the ceramic support 1 carries the wire 2 and a strip 6 of a paste of clay and water.  After this has hardened enamel layer 5 is applied and the protective layer together with the paste substratum removed, e.g. by tapping and brushing.  In a modification the window may be determined by means of a template and the protective layer applied by immersion.
Patent GB-286020-A (GB)
Title: Paper calendering device
IPC: D21G1/00
Filed: 1926-12-08
Abstract: 286,020. Dawe, A. L. Dec. 8, 1926 Calendering. - In the calenders of paper machines, finishing rollers 17 are provided mounted on the ends 16 of supporting levers 15. The rollers 17 are driven at a different circumferential speed from that of the calenders 12 through chain gear and shafts 28 passing through the fulcrums of the levers 15, each roller 17 being driven by a separate motor. The pressure of the rolls 17 on the calender rolls is adjusted by worm gear operated by hand wheels 26.
Patent GB-746074-A (GB)
Title: A method and apparatus for measuring the colour of substantially white substances
Inventor: KENT-JONES DOUGLAS WILLIAM
IPC: G01N21/47
Filed: 1953-11-10
Abstract: 746,074. Measuring whiteness photo-electrically. JONES, D. W. KENT-, and AMOS, A. J. Aug. 13, 1954 [Nov. 10, 1953], No. 31138/53. Class 40 (3). The whiteness of a substance 1 such as a flour paste is determined by means of two beams of light, 5, 9, produced by a source 2 and from which firstly the infra-red content is removed by means of filters 3, 4 and subsequently all other wavelengths than the 500-560 millimicron range by filters 7, 14. Beam 5 passes through a ground glass plate and the filter 7 to a photo-cell 6. The other beam 9 illuminates uniformly the surface 11 under examination and the light reflected from this surface is focused by a lens system 12 on to a photo-cell 13 through the 500-560 millimicron filter 14. Each cell is provided with an adjustable shutter; 8 for cell 6, and 16 for cell 13. The cells are connected in a null circuit with a galvanometer and tapping key. In use a standard comparative surface is mounted in holder 11 which may run in guides, and shutter 9 is so adjusted that a scale associated with it indicates the colour grade value characteristic of the shutter. Shutter 8 is then adjusted so that the galvanometer gives a null reading when the tapping key is closed. The comparative surface is then replaced by the surface under test and shutter 6 adjusted to produce a zero reading in the galvanometer. The position of the shutter is then a direct indication of the colour of the substance under test. Specification 669,950 is referred to.
Patent GB-410106-A (GB)
Title: Improvements in the manufacture and production of azo dyestuffs
IPC: C09B29/36
Filed: 1932-11-04
Abstract: Azo dyes are made by coupling diazo compounds with monohydroxypyridinonaphthalenes or their derivatives containing one hydroxy group, the components being selected so that the resulting dyestuffs are capable of forming complex metal compounds and contain at least one sulphonic acid group in the molecule. The dyestuffs may be treated with agents supplying metals, e.g. chromium, iron and copper compounds.  Violet to blue to black shades, fast to light, washing and fulling are obtained on wool by chrome-mordanting or after-chroming.  In examples, dyestuffs from the following components are described; p-nitro-o-amino-phenol - o - sulphonic acid, 6 - nitro - 2 - amino - 1 - phenol - 4 - sulphonic acid, 4-chlor-2-amino - phenol-6-sulphonic acid, 3-amino-4-hydroxy-1-methylbenzene-5-sulphonic acid, 5-amino-2-hydroxy - 3 - sulphobenzene - 1 - carboxylic acid, 3-amino - 2 - hydroxy - 5 - sulphobenzene - 1 - carboxylic acid, 2-amino-5-sulphobenzene - 1 - carboxylic acid, 4-nitro-6-chlor-2-aminophenol and 4 : 6 - dichlor - 2 - aminophenol; 3 - or 4 - hydroxy - 1 (N) . 2 - pyridinonaphthalene, 8 - hydroxy - 2 (N) - 1 - pyridinonaphthalene - 6 - sulphonic acid, 5-hydroxy-2(N).1-pyridinonaphthalene-7-sulphonic acid, 6-hydroxy-Py 2-methyl - 1 (N) . 2 - pyridinonaphthalene, 6 - hydroxy - 2 (N) . 1 - pyridinonaphthalene.  Monohydroxylated 2 (N) . 3 - pyridinonaphthalenes are also specified.  Specification 369,936 is referred to.  Monohydroxypyridinonaphthalenes are made from the corresponding sulphonic acids obtained according to Specification 394,416 by fusion with caustic alkalies.  Hydroxypyridinonaphthalene sulphonic acids are made from the corresponding aminonaphthol sulphonic acids by Skraup's reaction.  The Provisional Specification refers to halogen, nitro, amino and/or sulphonic acid derivatives of pyridinonaphthols.
Patent GB-1041456-A (GB)
Title: Improvements in or relating to detector circuits
IPC: H03K9/00
Filed: 1964-08-04
Abstract: 1,041,456. Transistor demodulator circuits. G. FERRIEU. Aug. 4, 1964 [Aug. 20. 1963], No. 31264/64. Heading H3T. In an amplitude demodulator signals are fed to a gate 20 controlled by a limited and amplified version of the input. As shown, signals at 2 are amplified by a PNP transistor 101 and fed to the base of an NPN symmetrical transistor 201, arranged so that on positive half cycles at 2, 201 is non-conductive but on negative half cycles, 201 is turned on by the signal from 101 so as to pass the negative half cycle of the signal at 2 to the load R. Amplifier 101 is normally provided with negative feedback via resistor 107, but the amplitude of large signals fed to 101 is reduced by further negative feedback provided by silicon point-contact diodes 104, 105. The circuit is substantially linear over an effective signal amplitude range of 1 mV to 2.5 V.
Patent GB-1021429-A (GB)
Title: Rear view mirror
IPC: B60R1/08
Filed: 1964-08-04
Abstract: 1,021,429. Rear - view mirrors. FORD MOTOR CO. Ltd. Aug. 4, 1964 [Sept. 23, 1963], No. 31486/64. Heading B7J. An anti-dazzle solid prismoidal rear-view mirror 10 having a wedge-shaped cross-section, a highly reflective coating 12 on its rear surface and an uncoated front surface 13, is hinged at 16 to housing 15, secured to a vehicle roof 18 at 21 and housing a solenoid 31 which is connected in the vehicle headlamps circuit as described with reference to Fig. 3 (not shown) so that whenever the solenoid is energized to tilt the mirror from the position shown in Fig. 2, i.e. a day driving position, towards the housings, i.e. a night driving position, the headlamps are on.
Patent GB-1500645-A (GB)
Title: Treatment of steel sheets
IPC: C09D1/04
Filed: 1976-07-28
Abstract: 1500645 Corrosion resistant coatings for steel sheets TOYO KOHAN CO Ltd 28 July 1976 [22 Dec 1975] 31494/76 Heading B2E [Also in Division C7] The corrosion resistance of steel sheets for forming e.g. deep draining is improved by treating with a solution containing 2 - 250g/l lithium silicate and 1 - 250g/l of at least one saturated or unsaturated fatty acid compound. higher alcohol wax containing at least 6 C atoms polyethylene type resin fluorine type resin or silicone type resin. The lithium silicate may be formed in situ in the solution by mixing silicic acid or a silicate and a lithium salt including the hydroxide in a molar ratio of 20:1 to 1:1. The solution may also contain 1 - 100g/l of chromic acid, chromate, dichromate, phosphoric acid or phosphate. The steel sheet may be plated with Zn, Cr, Sn, Cu, Ni or Al before treatment.
Patent GB-390244-A (GB)
Title: Improvements in the heat treatment of aluminium alloys
IPC: C21D1/60
Filed: 1931-11-14
Abstract: Age-hardenable aluminium alloy castings are hardened by removing the castings from the mould while still at a temperature exceeding 350 DEG  C. and quenching in water.  The castings may be transferred from the mould to an oven having a temperature of 420-520 DEG  C., retained there for a short time, and then quenched in water at or near boiling point.  The castings may be left in the water for a considerable time, e.g. about an hour.  An aluminium alloy containing 2 per cent of copper, 1 of nickel, 1,3 of iron, 1,2 of silicon, 1,6 of magnesium, and 0,1 of titanium, and an aluminium alloy containing 7 per cent of copper, 0,5 of nickel, 1,0 of iron, 0,6 of silicon, and 0,5 magnesium are referred to.